Skin Lesions: Is It Folliculitis or Something More? - Dermatology

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Foreign body in the skin of the left lateral thigh?


Hello, doctor.
Recently, I developed a bump on the outer side of my thigh that resembles a pimple.
It started as a red spot and then formed a pustule, which I squeezed to release yellow pus.
It has since been crusting over (occasionally bleeding) and is approximately 0.5 cm in diameter.
Currently, it is not painful or itchy.
I have looked up images related to molluscum contagiosum and viral warts.
Could you please advise if this is a case of folliculitis, or would you recommend further examination at a hospital? Thank you in advance for your response.

TT, 30~39 year old female. Ask Date: 2024/04/24

Dr. Wu Yuxin reply Dermatology


It is not recommended to seek online consultations.
Please visit a nearby dermatologist for an examination of the lesions.

Reply Date: 2024/04/24

More Info


When it comes to skin lesions, particularly those resembling acne or folliculitis, it’s essential to consider various factors before arriving at a diagnosis. Based on your description of a red bump on the outer thigh that initially produced pus and has since crusted over, it could indeed be a case of folliculitis, which is an inflammation of the hair follicles often caused by bacterial infection. However, the presence of pus and the fact that it occasionally bleeds raises the possibility of other conditions, including but not limited to abscesses or even more serious infections.

Folliculitis typically presents as small, red bumps or white-headed pimples around hair follicles. It can be itchy or painful but may also be asymptomatic, as you described. The condition is often caused by bacteria, particularly Staphylococcus aureus, and can occur due to various factors such as friction from clothing, shaving, or even hot tub use. In some cases, it can resolve on its own, but persistent or severe cases may require medical intervention.

Given that your lesion has progressed to crusting and occasional bleeding, it would be prudent to consult a healthcare professional for a thorough examination. A dermatologist can assess the lesion visually and may perform a culture to determine if bacteria are present, which would guide appropriate treatment. Treatment options may include topical antibiotics, oral antibiotics for more extensive infections, or other targeted therapies depending on the underlying cause.

In terms of self-care, it is advisable to keep the area clean and avoid picking at the lesion, as this can exacerbate the condition and lead to further infection. Applying a warm compress may help soothe the area and promote drainage if there is any pus accumulation. However, avoid using harsh soaps or scrubs that can irritate the skin further.

As for your concerns about conditions like molluscum contagiosum or viral warts, these typically present differently. Molluscum contagiosum, for instance, appears as small, flesh-colored or pearly bumps with a central dimple, and is caused by a virus. Viral warts, on the other hand, are usually rough and raised, often with a cauliflower-like appearance. The absence of these specific characteristics in your lesion makes it less likely that it is one of these conditions, but only a healthcare professional can provide a definitive diagnosis.

In summary, while your lesion may be indicative of folliculitis, the changes you’ve observed warrant a professional evaluation. Early intervention can prevent complications and ensure appropriate treatment. If you experience any worsening symptoms, such as increased pain, swelling, or fever, seek medical attention promptly. Remember, taking care of your skin and addressing issues as they arise is crucial for maintaining overall skin health.

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